Stop motion for yarn, thread, and like winding machines



Marcn 24, 1925. 1,530,798

E. WILDT STOP MOTION FOR YARN, THREAD, AND LIKE WINDING MACHINES FiledSept. 24, 1924 4 Sheets-Sheet 1 l5 f 0| r- I?" o /7- h 50 I N V E NTO R:

[a l/Vin wi/a r- A TTOR Y March 24, 1925. 1,530,798

E. WILDT STOP IIOTION FOR YARN, THREAD, AND LIKE WINDING MACHINES FiledSept. 24, 1924 4 Sheets-Sheet 2 NV E NTOR: Edwin Wild?" ATTORN Y March24, 1925.

E. WILDT STOP MOTION FOR YARN, THREAD, AND LIKE WINDING MACHINES FiledSept. 24, 1924 4 Sheets-Sheet 5 INVENTOR: Edwin ATTORNE March 24, 1925.1,530,798

E. WILDT STOP MOTION FOR YARN, THREAD, LIKE WINDING MACHINES Filed Sept.24, 1924 4 Sheets-Sheet 4 I NVE NTOR Edwin wild?- BY:?M M

ATTORNEY Patented Mar. 24, 1925.

UNITED STATES PATENT OFFICE.

EDWIN WILDT, OF LEICESTER, ENGLAND, ASSIGNOR TO WILDT AND COMPANY,LIMIT- ED, OF LEICESTER, ENGLAND, A BRITISH COMPANY.

STOP MOTION FOR YARN, THREAD. AND LIKE WINDING MACHINES.

Application filed September 24, 1924.

To all whom it may concern:

Be it known that I, EDWIN Winn-:2, a subject of the King of GreatBritain, residing at Leicester, in the county of Leicester. England,have invented new and useful improvements in or Relating to Stop Motionsfor Yarn, Thread, and like \Vinoling Machines, of which the following isa spe ification.

The invention relates to unlchiru-s for winding yarns, threads and thelike from banks on to bobbins or like members and concerns those of thekind provided with a stop motion for automatically stopping;

rotation of the bobbin or equivalent when the tension on the windingyarn or thread is abnormally increased.

In machines of this kind the bank, from which the yarn or thread. isdrawn for wind ing, is usually carried upon what is termed a swift. Thiscarrier is mounted in a rotatable manner and is rotated by the yarnbeing drawn therefrom. lVhen the stop motion becomes effective andarrests rotation of the bobbin or other device upon which the yarn isbeing wound there is a tendency for the swift or hank carrier, owing tothe momentum set up by its rotation, to overrun i. e. continue to rotateafter the bobbin has stopped. This liable to drag or ravel the yarn andsometimes to such an extent as to break it.

The object of the invention is to provide means which will operate inconjunction with the stop motion to arrest rotation of the swift or hankcarrier when said stop motion operates to arrest rotation of the bobbinor other device upon which the yarn or thread is being wound.

By positively arresting the rotation of the swift when the windingspindle stops, overrunning of the swift is prevented. This is animportant improvement in connection with the winding of yarns by reasonof the fact that the elimination of the possibility of overrun enablesthe machine to be driven at a much higher speed than heretofore,consequently the yarn can be more quickly wound and the output of themachine increased.

According to the invention a brake or other suitable stopping device isprovided for arresting rotation of the swift or bank carrier said brakeor device being operable Serial No. 739,468.

by intermediate connections actuated by a part of the stop motion of thewinding machine.

In the preferred arrangement the brake or stopping device is normallyheld out of action by a spring or weight and the operating connectionsare acted upon by the member of the stop motion which is controlled bythe winding yarn.

In further describing the invention refer ence will be hereinafter madeto the accompanying drawings wherein,

Figure 1 is a side elevation partly in section, and

Figure 2 is a rear elevation of a convenient embodiment of theinvention, showing the brake device and the stop motion in theinoperative position.

Figure 3 is a view similar to Figure 1., but shows the brake and thestop motion in the operative position, and

Figure 4 is a side elevation partly in section for partly releasing thebrake device and stop motion after the operation thereof, to permit ofthe bobbin spindle being rotated by hand as will be hereinafterdescribed.

According to the illustrated embodiment of the invention, a brake shoe 1pivotally mounted on the underframe member 2 which carries the swift orhank carrier 3 is controlled by a tension spring 4 and normal-- ly heldclear of a hub 5 on the swift or hank carrier. The brake shoe 1 ispressed into contact with the hub by a push rod 6 slidable in lugs 7 onthe member 2, one end of which push rod acts upon said shoe the otherend being acted upon by a lever or bar 8 also pivoted on the under framemember 2. This bar or lever is moved by a suitable part of the stopmotion. For example, the mechanism constituting the present inventionmay be used in conjunction with a stop motion of the kind wherein alever held in normal position by a spring o weight is operated byabnormal tension of the yarn to stop rotation of the bobbin spindle. Anarrangement of this nature is illustrated in the accompanying drawings.In said arrangement a lever 9 is fulcrummed upon a bracket 10 attachedto a cross member 11 on the machine frame and has connected therewith anarm 12 carrying a. roller 13 or equivalent adapted in normal position toengage one end of a lift lever 14, pivoted on the bracket 10, so as tomaintain the other end of said lever out of engagement with the usualdriver disc on the bobbin spindle 16 against the action of a spring 17,or equivalent. The yarn or thread represented by the dot and dash line18 passes from the swift 3 over a bar 19 through a knot plate 20 roundguide pulleys 21 and 22 on the lever 9 and a pivoted arm 23 respectivelyand thence to the bobbin 24. Referring now to Figure 3, if for anyreason the tension of the yarn becomes abnormal the lever 9 is pulleddownwards thereby breaking the engagement between the roller 13 and thelift lever 14 whereupon the lever 9 falls and strikes the pivoted leveror bars 8 which through the medium of the push rod 6 applies the brakeshoe 1 to the hub 5 of the swift or hank carrier to arrest rotation ofthe latter. At the same time the lift lever 14 is actuated by its spring17 to disengage the disc 15 from the usual driving wheel 25 and lifts itinto contact with a brake pad 26 on the bracket 10 thereby stopping thewinding spindle.

If desired, the aforesaid brake mechanism may be used in conjunctionwith the mechanism described in British specification No. 28480 of 1913,the yarn operated lever 1 referred to in said specification beingarranged to strike and move the aforesaid lever or bar 8 to apply thebrake 1 in the manner just described.

In order to enable the swift or hank carrier 3 and the bobbin spindle 16to be rotated by hand, if necessary for re-threading or other purposes after the operation of the stop motion and the brake me -hanism asaforesaid, we may provide, in combination with said brake mechanism andstop motion, means for effecting a partial release of t same.Conveniently, such means comprise a handle 27 secured to a spindlerotatable in the bracket 10 and having thereon a lever formed by fingers:29 and 30. The finger 29 engages the lever 9 while the finger 30engages the adjacent end oi" the lift lever it when the handle 27 is acuated as shown in Figure 4, with the lever 9 and the lift lever 14 inthe position shown in li igure Thus the lever 9 may be raised slightlyto partly release the brake shoe 1 and at the same time the lever 14 maybe partly released to allow the disc '15 to move sufficiently to clearthe brake pad 26. During the movement of the handle 2? the finger 3t)enters a recess 31 in the lift lever 14 thus arresting the movement ofthe latter so as to prevent said disc from engaging the driving wheelThe details of construction may be varied without departing from thescope of the invention.

What I claim then is z 1. In a yarn winding machine of the kinddescribed, a brake arrangement for arresting the rotation of the swift,comprising a brake device, means for normally holding the sameinoperative, and operating connections between said device and a yarncontrolled lever of the stop motion of the machine which is held innormal position by suitable means and actuated to render the stop motionactive by abnormal tension of the yarn, said connections being operatedto apply the brake by the direct action thereon of the lever when thelatter is actuated.

In a yarn winding machine oi the kind described a brake arrangement forarrest ing the rotation of the swift, comprising a brake device, aspring for normally holding the same inoperative, and operatingconnections between said device and a yarn controlled lever to stopmotion of the machine which is held in normal position by a spring andactuated to render the stop motion active by abnormal tension of theyarn, said connections being operated to apply the brake by the directaction thereon of the lever when the latter is actuated.

3. In a yarn winding machine of the kind described, a brake arrangementfor arresting the rotation of the swift, comprising a brake device, aspring for normally holding the same inoperative, and operatingconnections between said device and a yarn controlled lever of the stopmotion of the machine which is held in normal position and actuated torender the stop motion active by abnormal tension of the yarn, saidconnections being operated to apply the brake by the direct actionthereon of the lever when the latter is actuated.

4. In a yarn winding machine of the kind described. a brake arrangementfor arresting the rotation of the swift, comprising a pivoted brake shoeadapted to engage a hub on the swift, a spring for normally holding saidshoe clear of the hub. a push rod for acting upon the brake shoe and apivoted bar for acting upon the push rod, said bar being acted upon by ayarn con trolled lever of the stop motion of the machine so as to causethe brake shoe to be applied to the hub when the lever is actuated torender the stop motion active.

5. In yarn winding machine of the kind described, a brake arrangementfor arrest ing the rotation of the swift, comprising a pivoted brakeshoe adapted to engage a hub on the swift. a spring for normally holdingsaid shoe clear of the hub, a push rod for acting upon the brake shoe,and a pivoted bar for acting upon the push rod, said bar being engagedby a yarn controlled lever of the stop motion of the machine which isheld in normal position oil a spring and actuated to render the stopmotion active and to put the brake shoe into operation by abnormaltension of the yarn.

6. In a yarn winding machine of the kind described, a vertical bobbinspindle, a friction disc thereon, a wheel for driving the disc, a springcontrolled lift lever for engaging one side of said disc, a brake pad onthe opposite side of the disc, but normally clear of same, a yarncontrolled lever for normally holding the lift lever clear of thefriction disc and actuated by abnormal tension of the yarn to releasesaid lift lever so that it lifts the friction disc off the driving wheeland into contact with the brake pad to stop rotation of the bobbinspindle, a swift, a brake device for the swift, and

.connections arranged between said device and the yarn controlled leverand acted upon by said lever, when the latter is actuated, for puttingthe brake device into operation.

7. In a yarn winding machine of the kind described, a vertical bobbinspindle, a friction disc thereon, a wheel for driving said disc, a liftlever for engaging one side of said disc, a brake pad onthe oppositeside of the disc, but normally clear of same, a spring normally tendingto cause said lift lever to disengage the disc from the driving wheeland press it into contact with the brake pad to stop rotation of thebobbin spindle, a yarn controlled lever for normally holding the liftlever clear of the friction disc and movable downwards by abnormaltension of the yarn to release said lever, a swift, a pivoted brake shoefor engaging a hub on the swift, a spring for normally'holding said shoeclear of the hub, a push rod for acting upon the brake shoe and apivoted bar for acting upon the push rod said bar being actuated by theyarn controlledlever, upon the downward movement of the latter, to applythe brake shoe to the hub of the swift.

8. In a varn winding machine of the kind described, a vertical bobbinspindle, friction driving means for the spindle, a brake pad, a springactuated lift lever for rendering said driving means inoperative andapplying the brake to stop rotation of the bobbin spindle, a yarncontrolled lever, an arm connected thereto and a roller in the arm fornormally holding the lift lever out of action and operable by abnormaltension of the yarn for releasing said lever, a swift, a springcontrolled brake shoe for arresting the rotation of said swift, a pushrod for acting upon the brake shoe, and a pivoted bar adapted to actupon the push rod, said pivoted bar being actuated by the yarncontrolled lever, when the latter is operated, to put the brake shoeinto operation.

9. In a yarn winding machine of the kind described, a brake arrangementfor arresting the rotation of the swift comprising a brake device andoperating connections ar ranged between said device and a yarncontrolled lever of the stop motion of the machine whereby saidconnections are operated to apply the brake when the stop motionoperates, and means for effecting a partial release of the brake deviceand stop motion after the operation thereof.

10. In a yarn winding machine of the kind described, a brake arrangementfor arresting the rotation of the swift comprising a brake device, aspring for normally holding the same inoperative, and operatingconnections between a yarn controlled lever of the stop motion of themachine which is held in normal position by a spring and actuatedtorender the stop motion active by abnormal tension of the yarn, saidconnections being operated to apply the brake by the direct actionthereon of the lever, when the latter is actuated, and means foreffecting a partial release of the brake device and stop motion afterthe operation thereof.

11. In a yarn winding machine of the kind described, a brake arrangementfor arresting the rotation of the swift, comprising a pivoted brakeshoe, adapted to engage a hub on the swift, a spring whereby said shoeis normally held inoperative, a push rod for acting upon the brake shoe,a pivoted bar for acting upon the push rod, said bar being acted upon bya yarn controlled lever of the stop motion of the machine so as to causethe brake shoe to be applied to the hub when the lever is actuated torender the stop motion active, and means for efiecting a partial releaseof the brake device and stop motion after the operation thereof.

12. In a yarn winding machine of the kind described, a brake arrangementfor arresting the rotation of the swift, comprising a pivoted brake shoeadapted to engage a hub on the swift, a spring for normally holding saidshoe clear of the hub, a push rod for acting upon the brake shoe, apivoted bar for acting upon the push rod, said bar being engaged by ayarn controlled lever of the stop motion of the machine which is held innormal position by a spring and actuated to render the stop motionactive and to put the brake shoe intooperation.

by abnormal tension of the yarn, and manually operable means foreffecting a partial release of the brake shoe and stop motion after theoperation thereof.

18. In a yarn winding machine of the kind described, a vertical bobbinspindle, a friction disc thereon, a wheel for driving the disc, a springcontrolled lift lever for engaging one side of the disc, a brake pad onthe opposite side of the disc but normally clear 1 trolled lever andacted upon by said lever,

when the latter is actuated, for putting the brake device intooperation, and a hand lever and a member associated therewith for movingthe yarn controlled lever and the lift lever after the operation thereoffor partly releasing the brake device and the stop motion. Y

14. In a yarn winding machine of the kind described, a vertical bobbinspindle, a

-' friction disc thereon, a wheel for driving said disc, a lift leverfor engaging one side of the disc, a brake pad on the opposite side ofthe disc, but normally clear of same a spring whereby the lift lever ismoved to disengage the disc from the driving wheel and press it intocontact with the brake pad to stop rotation of the bobbin spindle, ayarn controlled lever for normally holding the lift lever clear of thefriction disc and movable downwards by abnormal tension of the yarn'torelease said lever, a swift, a pivoted brake shoe for engaginga hub onthe swift, a spring whereby said shoe is normally held clear of the hub,a push rod for acting 'upon the brake shoe, a pivoted bar for actin uponthe push rod, said bar beingactuated y the ,yarn controlled lever, uponthe downward movement of the latter, to apply the brake shoe to the hubof the swift, a hand lever and a member connected thereto and movablethereby for engaging and. moving the yarn controlled lever and the liftlever slightly after the operation thereof, to partly release thebrakeshoe and 't'he frictiondisc.

15. In a yarn winding machine of the kind herein described a'verticalspindle friction driving means for the spindle, a brake pad, a springactuated lift lever for rendering said driving means inoperative andapplying the trolled brake shoe I01 arresting the rotation of the swift,a push rod for acting upon the brake shoe, a pivoted bar adapted to actupon the push rod, said bar being actuated by the yarn controlled lever,when the latter is operated, to put the brake shoe into operation, apivot-ed handle, and a lever connect ed thereto and operable thereby forlifting the yarn controlled lever and lowering the lift lever slightlyafter the operation thereof to partly release the brake shoe and thefric tion disc.

16. In a yarn winding machine of the kind described, a brake arrangementfor arresting the rotation of the swift comprising a brake device, aspring for normally holding the same inoperative, and operatingconnections between said device and a yarn controlled lever of the stopmotion of the machine which is normally held raised and is pulleddownwards by abnormal tension of the yarn to render the stop motionactive, said connections being operated to apply the brake as the resultof the contact therewith of the lever when the latter falls.

17. In a yarn winding machine of the kind described a brake arrangementfor arresting the rotation of the swift, comprising a brake device, aspring whereby-said device is'held inoperative, operatingconnections'between the device and a yarn controlled lever of the stopmotion of the machine which is normally held raised and is pulled"downwards by abnormal tension of the yarn to render the stop motionactive, said conneetionsbeing operated to apply the brake as the resultof the contact therewith of the lever when the latter falls, and meansfor effecting a partial release of the brake device and the stop motionafter the operation thereof.

In testimony whereof I have signed my name to this specification.

EDWIN WILDT.

